The Atlantis Fritillary is a medium-sized, richly colored fritillary with a dark reddish-brown ground color and a broad dark brown border on the hindwing underside. It inhabits boreal and montane forests across North America. It is among the most widespread of the larger fritillaries and is single-brooded in midsummer. Like all Speyeria, eggs hatch in fall and tiny larvae overwinter before feeding in spring.
Best time to see a Atlantis Fritillary
The best time to see a Atlantis Fritillary is June–July, when about 79% of U.S. sightings happen, based on 3,809 research-grade iNaturalist observations.
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